May I chime in here on a related subject ??
By any chance, did either of you guys happen to catch the PBS Nature episode earlier this week on owls ??
If not, I was amazed to learn that owls can see 2 1/2 times better in the dark than others.....in fact, 70% of an owl's skull is said to be devoted to accommodating their eyes (while eyes only occupy 5% of a human skull). They therefore do much of their hunting at night when other predators are down; as a result, they're viewed to more or less "own the skies" when it's dark. In addition, their hearing is something like 10x better than other birds, meaning they can literally hear their pray moving (even when covered by snow).
The show also explained how their wings are developed in such a way that they create virtually no air turbulence when in flight; meaning they fly virtually silently. Moreover, their wings are apparently much bigger (comparatively speaking) than other predator birds, allowing them to fly much slower and virtually hover in the air......making it easier for them to plot an attack on their prey. Apparently, their biggest physical negative is the fact their wings are not waterproof; said to be a byproduct of their ability to fly so silently. I guess when it rains, they have big problems; in fact, the piece described rain as their "kryptonite".
They also discussed the physiology surrounding owls' wacky ability to swivel their heads something like 270 degrees; extremes that would pinch-off arteries and cause a human to pass out from lack of blood flow to the brain. Anyway, if you haven't seen the Show, I'd wholeheartedly recommend you take the time to watch this profile about this fascinating predator the next time it shows on your local PBS affiliate.